Marianna East WWTP - Lee County, Arkansas Wastewater Treatment Plant

Marianna East WWTP is a municipal wastewater treatment facility located in Lee County, Arkansas, serving a population of about 2,770. The plant is situated in the Mississippi Delta region, an area characterized by agricultural activity and flat terrain. As a small-scale facility, it plays a key role in managing local wastewater for the community. The plant operates under the US Clean Water Act, which requires National Pollutant Discharge Elimination System (NPDES) permits for all discharges. For facilities of this size, secondary treatment is typically mandated to reduce organic pollutants and suspended solids. The plant's design and operation are subject to state and federal regulations to ensure compliance with water quality standards. The treated effluent from Marianna East WWTP is discharged into nearby streams that flow into the Mississippi River watershed. This river system is ecologically significant, supporting diverse aquatic life and providing habitat for migratory birds. The plant's discharge must meet strict limits to protect downstream water quality and the broader Mississippi River ecosystem.

The plant discharges into local tributaries of the Mississippi River, which ultimately drains into the Gulf of Mexico. The Mississippi River basin is one of the largest in North America, supporting a wide range of aquatic species and providing critical habitat for migratory waterfowl. The region's flat topography and agricultural land use mean that nutrient loading from wastewater can contribute to downstream hypoxia zones, making effective treatment essential.